Automobile tire



Feb. 23 1926.. 1 1,574,611

A. F. DEMBEK AUTOMOBILE TIRE Filed Dec. 25, 1924 h w Y 15 3,.. unam M 2?5v 2? IIx` 5 A i l l A? y wlTNEss 5w M 5 INVENTOR7 ATTORNEYS PatentedFeb. 23, 192e.

UNITED STATES ANTHONY r. minnen, or BROOKLYN, NEW YORK.l

AUTOMOBILE TIRE.

Application filed December 23, 1924. xSerial No. 757,710.

To all whom t may cof/wcm:

Be it known that ANTHONY F. DEM- BEK, a citizen oi Poland, but adeclarant for citizenship of the United States, and a resident of thecity of New York, borough of Brooklyn, in the county of Kings and Stateof New York, have invented certain new and useful Improvements inAutomobile Tires, oi' which the following is a full, clear, and exactdescription.

This invention relates to improvements in tires ior automobiles, moreparticularly to pneumatic tires, and it consists in the com-` binations,constructions and arrangements herein described and claimed.

An object oi the invention is to provide a tire which is adapted Whendeflated to be quickly and easily placed on the felloe of -a wheel andwhen inflated to retain its position on the telloe of the Wheel.

A further object oit' the invention is to provide a pneumatic tirehaving a plurality ot endless air chambers Within the casing of the tireso that the tire will be effective to buoyantly support a Wheel on Whichit is mounted even though the Walls of one ot said chambers shall havebeen punctured.

A further object of the invention is the production of a pneumatic tirehaving a plurality of independent innertubes, and means in connectionwith each of saidinner tubes permitting the iniiation and deliation oithe same.

A further object oi' the invention is the provision of a pneumatic tirehaving 'an outer casing adapted to be mounted on the 'felloe ot' a Wheeland an inner endless pneumatic body which can be quickly and easilyplaced Within the outer casing or removed therefrom When the innerpneumatic body is deflated and which when inflated will maintain theouter casing in its proper lo'rm and in place on the elloe of a Wheel.

Other objects and advantages of the invention Will be apparent from thefollowing description, considered in conjunction lWith the accompanyingdrawings, in Which- Figure 1 is a sectional vieW through thelongitudinal axis of a portion oi-the improved tire in place on thefelloe of a Wheel, showing one oi' the tube sections thereof iniiated; Y

Figure 2 is a vieW similar to that of Figure 1 showing the other tubesection inlated;

y Figure 3 is a transverse section through the improved tire, the viewbeing taken substantially along the line 3-3 of Figure 1;

Figure l is a section along the line a-lot Figure 1. f

'lhe improved tire comprises an outer casing 1 which is made ot anysuitable Wearresistant fiexible material. The outer casing 1 has the.torni of an endless 'tube provided with a slot or narrow opening 2extending in its inner peripheral portion circumferentially thereof. Theouter casing 1 may be attached to a Wheel in any suitable manner and inthe present instance is attached by the employment oi' a clincher rim itattached to the felloe 3. Y

The pneumatic inner body comprises two concentric endless tubularsections et and 5, respectively, each ol which isinade of rubber or likeiiexible elastic material. The tubular section is circular in crosssectional contour when intlated. The inner peripheral portion oiE thetubular section 5 isoverlapped by the outer peripheral portion ot thetubular section ll, the tubular section l being crescent-shaped in crosssectional contour when deflated and extending at opposite sides of thetubular section 5 between the outer wall or the latter and the innerWall of the outer casing 1 approximately half the distance from themedian line of the inner peripheral portion ot the tube 5 to the medianline of the outer peripheral portion oi' the tube 5, as clearly shoivnin Figure 3.

Vith the arrangement just described, an endless air chamber 6 is deiinedwithin the tubular section 5 and an endlessl air chamber 7 is deiinedWithin the tubularv section 4, the chamber (3 being circular rin crosssection when the tube 5 is inflated and the chamber 7 being circular incross section when the tubular section l; is inflated.

A tire valve stem 8 extends through radially aligned openings 9, 10,V l1and 12 in the inner peripheral portion ot the tube 5, the outerperipheral portion of the tube l, the inner peripheral portion oi' thetube i and the felloe 3, respectively, so that a flange 13 at the innerend of 'the valve stem 8 Will be received within the chamber 6. The tirevalve stem 8 passes through the slit 2 in the outer casing 1 between theopenings 11 and 12 and protrudes from the opening 12 .beyond the innerperipheral Wall of the felloe 3. A nut 14 is disposed Within thetubularsection 4 in threaded engagement with the stem 8 and can be manipulatedto cooperate with the flange 13 to clamp the interposed portion of thetubular sections 4 and 5 closely against each other so that the escapeof air through the aligned openings 9 and 10 between the sections 4 and5 is prevented. disk 15 which surrounds the stein 8 within t ilthetubular sect-ion 4 has a tubular extension Vengagement with the portionof the tubular extension 1G that extends throughthe opening 11 in theslot 2. The nut 19 can be screwed on the `tubular extension 1G until thepacking ring 18 is compressed to an eX- tent sufiicient to seal thespace between the tubular extension 16, the nut 19 and the tire valvestem 8 and to compress the portion of the tubular section 4 that isreceived between the nut 19 and the flange or disk 15 so that escape ofair from t-he chamber 7 through the opening 11 is prevented. The portion2O of' said felloe-member extends through the opening 12 in the felloeand is screwthreaded to receive a nut 21. A pin l) carried by the 'nut14 whose free end is engageable in the recess in the nut 15, serves topermit of the application of nut 14 by the manipulation of nut 15.

A dust cap 29 having screw threaded porlions and 31 is provided. Thenthe tube section 5 is inflated the cap 29 is arranged on the stein Swith the portion 30 in threading engagement `with the screw-threaded end32 ofthe stem 8, and when the tube section 4 is inflated asin Figure 2the portion 31 of the cap 29 is in threading engagement with the end 32of the stein. to hold the cap 29 in place. l

rlhe tire valve stein 8 is provided with a passage 22 whichl extendsfrom the inner end of the tire valve stem longitudinally of the tirevalve stem into the portion of the latter that is received in thechamber 7 a-nd then opens at 23 into thp chamber 7. A second passage 24extends in the tire valve vstem for the full length of the latter and isin open communication at its outer end with the chamber 6. An inwardlyopening check valve 25 which may be the usual valve is disposed in theouter end portion of the passage 22, which is threaded as indicated at26' for connection with the usual threaded connection of a pump or likesource of pressurefluid supply. A valve 27 similar to the of air putinto the section 4.

valve 25 is disposed in the outer end portion of the passage 24 whichalso is threaded at its inner end, as indicated at 28 for connectionwith the outlet member of a pump or the like.

F rom the foregoing description of the various parts of the device, theoperation thereof may be readily understood. The in-ner pneumatic bodycomprising the tubular sections 4 and can be quickly and easily placedwithin the casing 1 when the inner pneumatic bodyv is deflated. and theoutercasing 1 with the inner pneumatic body therein then placed in therim R so that the tire valve stem 8 will extend through the opening inthe felice element. ir can be forced through the passages 22 and 24 toinflate the tubular sect-ionsl 4 and 5 as desired and as required tomaintain the casing 1 in proper form and give a desirable buoyancy.

rEhe tubular sections 4 and 5 being capable of inflation independentlyof each other afford means in a tire wherebya supply of air may becarried in one section-the section -which, when deflated because olf apuncture or any other reason, can have its lost buoyant effectsupplanted by a supply iloreover, if' desired. each of the section-s 4and 5 may be supplied with air putting them under sub stantially equalpressure so that in the event of a puncture of section 5, the section 4will still give sufficient buoyancy to support the wheel to which thetire is attached, so that a vehicle of which the wheel is a part canproceed for a considerable distance without any appreciable injury tothe tire casing or pneumatic -body within the casing.

I claim:

1. In a tire structure, a plurality of inflatablev inner tubes adaptedto lit within a tire casing, a valveI stem attached. toand sup ported bythe walls of said inner tubes, a packing element carried by the wall ofone of said inner tubes and through which the valve stem slidablyextends, said valve stem having separate passages therein which communicate respectively with the interiors of the inner tubes, and a,check valve in each oi said passages whereby to iniiate and deflate saidinner tubes.

2. In a tire structure, a plurality of' inflatable inner tubes adaptedto fit within a tire casing, a valve stem attached to and supported bythe walls of said inner tubes, a packing element carried by the wall ofone of said inner tubes and through whichv the valve stem slidablyextends, said valve stem having separate passages therein whichcommunicate respectively with the interiors of the inner tubes, a checkvalve in each of' said passages whereby to inflate and deflate saidinner-tubes, and attaching means whereby to attach said packing elementtoa tire rim.

ANTHONY F. DEMBEK.

icc

